Let's break down the problem step by step.

1. Original Price of the Item: The item is originally sold for ₹1000.

2. First Discount (10% off): The item gets a 10% discount during the sale. So, the price after the 10% discount is: $\text{Discounted Price} = 1000 - (10\% \times 1000) = 1000 - 100 = 900$ So, the price after the 10% discount is ₹900.

3. Second Discount (2% off due to the payment method): Arman uses a payment method that gives him an additional 2% discount on the discounted price of ₹900. So, the final price Arman has to pay is: $\text{Final Price} = 900 - (2\% \times 900) = 900 - 18 = 882$

So, the final price Arman has to pay is ₹882.

Conclusion:

The final price that Arman will pay is ₹882, which is clearly less than 2880.

Therefore, the correct answer is:

C. It will be less than 2880.

---

Would you like a more detailed breakdown or have any further questions? Here are some related questions to explore:

1. How do multiple discounts affect the final price when applied sequentially?
2. What is the formula for calculating the final price after multiple percentage discounts?
3. How would the price change if the initial price was higher than ₹1000?
4. How can the total percentage reduction be calculated from multiple discounts?
5. If the first discount was 20% and the second 5%, how would the final price change?

Tip: When calculating discounts sequentially, remember that the second discount is always applied on the already discounted price.